Padlock



' April 23, 1929. Y s. R, FRAM Y 1,710,355

PADLOCK Filed July 25. 1928 2 Sheets-Sheet l O 7-70 MEV April-23, 1929. S. R. FRAIM PADLOCK Filed July 23. 1928 2 Sheets-ShamI 2 /N L/e/V To@ cl/vacz A? FQf-v//v Patented Apr. 23, 1929.

-SAMUEL FRIM, OF LANCASTER, PENNSYLVANIAa PADLoCii.

Application fried July 23,1928. ser-iai No. 294,863.'

VThis invention relates in general to pardlocks and more particularly 'to improvements in the mechanism of padlocks of the type dis'i closed in theA United States patentl issued to myselfand relating to padlocks No; 1,563,181, Noveinber24, 1925., and the application relatf Serial Number 276,781, filed by myself May 10, 1928,-now*y matured into Patent llo. 1,704,184, dated /March 5,1192?.

Among other objects'of my invention is that .of providing la positive locking mechanism to comprise two main locking units,

ing to padlock each being capable of securely fastening the shacklejwithin the'padlock easing; one locking unit to engage the removable toe lof the shackle, and the other locking unitto engage the toe. as well as the pivoted heel of the shackle to eect la double locking of the padlock. l

Another object of thev invention is to so construct the locking units that they will be actuated in secuiencev in' that' unlocking same one will be completelyl withdrawn from locked position before the other yis actuated, and that the latter must be operated before the toeis disengaged, and'moreover ,fully actuated by thekey before the heel is disengaged and the toe is free to be withdrawn from the casing."` l

A further object is to so construct and ari'aige the locking units that-*there will be no occurrence of inalfunctioning due to undesiredrclative motion, or other disarrangenient, or lack of return spring action.

lWith the fioregoing'and other objects in view, tion of parts 'and tion hereinafter set in the details of construe,- forth, certain embodiments thereof being illustrated in the 'aceompanyiiig draw-ings, in which: y

Figure 1 is a top plan view'of the padlock with the uppenplate of the'casing removed and locking mechanism locked;

Figure 2 is a similar view showing a ial key action with the-locking 'inechi am In 'partially unlocked, namely, the pivoted lever;

Figure 3 asimilar view showing the locking mech ism completely unlocked and the shacklereleased; i y Figure l is va view simile the lever change plate removed;

TV10ure 5 is .a view in section taken along against thev invention consists in the combina@A yengages the same on the opposite side.

.r to Figure 3, With Figure 6 is a Aviewl taken along line 6-6 of Figure 2,; Y y

Figure 7 isa View of all the working eleasy the key,"each being shown 'in detail in perspective. Y

Referring more particularly Ito the drawlings, the device comprises a casing, the lower ments ofthe assembly disassembledas well half of whichis shown in the drawings at 1, y

in which there is` located at stud 2 upon which .a shackle 3 is pivotally mounted so as to allow the rtoe 5 of the shackle to be swung into and outvof the casing.; c

rThe mechanism for locking the shackle to the casing consists'mainlyin a pivoted lever 9 anda slidably mounted bolt 10, each of which is adapted to engage opposite sides of thetoe 5 Lof the shackle in locked relation. The lever 9 is pivotally mounted on the casing stud 11-'and is normally spring-actuated the casing stud 17' by means of the spring 21; This spring 21 is coiled about thestud 7V and bears against the Vcasing wall andl against av stud y22 carried by the lever 9 on the vunder lside thereof.` The lever 9 v also carries' an additional stud 36 whose sole purpose is that; of a bearing member for alignmentinthe operation of the lever.` The lever is'further providedwitha'lug 12 on the upper side thereof, the purpose of which lug will 'appearlaten TheI bolt 10 is mounted on the stud 17 which fits in an elongated slot 16 formed in the bolt, thereby adapting the bolt for 'sliding 'and 'rotary movement. The boltis normally spring-actuated'in a clockwise direction and in such a position that thestud 17 bearsagainst the lefteXtremity of the slot 16, by means of a spring 26 coiled about the study 1( and bearing` against a casing .stud l25 and on yupst-anding lug 34 of the bolt 10.V s I Figure 1 shows the locking mechanism engaging the shackle .in` fully locked position. y The hook of the lever 9 isv shown engaging the slot- 5 of the nose 5 of the sliackler{hile the hook 24 of the boltI 1() lug 12 ofthe lever 9iits within a notch 14 ofthe boltto guard against accidental relative movement of the two locking elements.

yAsa-further precautionary'step to' prevent unauthorized opening ofthe lock by rapping saine to open without' the use of The a key, I provide a spring lever 38 attached on the upper liace of the top bolt 10 at 39. This spring lever 38 is ofspring metal and bears snugly against the upper face of the bolt 10. The spring lever also carries a stud pin 4t2 which protrudes through an aperture l() formed in the bolt 10 and engages a .recess /ll tormed inthe upper lace of the locking` lever 9. This provides a posit-ive locking ol the two lockingelements, the lever 9 and the bolt 10, against relative movement and consequently prevents the lock lrom being rapped` open.

Inasmuch it is impossible Vto open the lock while the stud pin l2 locks the locking bolt and lever toether l have )rovided a means to be actuated by the key to release` process ot opening the same 1n the normal padlock. To do this l provide the spring lever 88 with an upturned flange 48 at its free end so that it also overlaps the key bearing surface 18 of the locking bolt 10. rllhe effect of this is that the top hitting oit the key will, upon clockwise rotation, force the spring lever 88 upwardly and withdraw the stud pin Ll2 from engagement with the recess l1 of thelocking lever 9, leaving the locking bolt and lever free to be actuated by the key upon further rotation thereof.

As the key 32 is fitted on the key stud 30 and rotated to the 2, the upper ward 88 hasengaged the overlapping flange a3, forcing the latter upwardly, withdrawing the stud pin 4:2 from the recess 4 0 in the levert), the lower ward 38 has engaged the bearing surface 23 el the lever 9, rotating the latter ina counterclockwise direction against the action of the spring 21 and out of engagement with the nose ol the shackle. Up to this point the bolt 1O has its hook engaging the nose o1 the shackle while its other end 27 bears against theprojection 6 et the heel 4 ci the shackle in virtually locked relation. The lever having been thus rotated, its lug 12 has been withdrawn from the notch 14 of the bolt.

The bearing' surface 18 ot the bolt merely acts as a guide iter the ward. olil the key, The other bearing sur'lace 19 of the belt is in a lower plane with ran oll'set 20 therebetween. Figure 2 shows the key touching the offset 20. Upon vfurther rotation of the key, the ward bearing against the oilset 20, forces the bolt to the right and the hook 24- out of engagement with the nose ol: the shackle; the hook L8 out ot' engagement with the stud 11; and the end 27 out of engagement with the heel of the shackle, as the bolt slides to the right and pivots slightly on the stud 17 under the action of the spring 26.

This renders the shackle free from `the locking elements and the nose removable 'from the casing. ln order, however, to make the release of the nose` more positive position shown in Figureupon the unlocking of the shackle, there is provided a spring 29 coiled about the stud 25 and bearing against .the easing, the other end oil the spring fitting behind'the pro-V jection 6 to Aaccomplish the desired result.

As a further expedient avoid disarrangement and mal function of the two main locking elements, there is arranged therebetween a thin stationary change plate 8. This change receive the stud 11, a notch 17 to recel-ve the stud 17,- and a recess 25 toreceive the studv 25, thus separating the body portions oi tl e two locking elements 9 and l0. The change plate is also apertured at la to allow the stud pin f2 to pass therethrough.

In connection with the operation of the locking mechanism, the stud 1l is formed with a sharp corner extension which affects the engagement of the hook 28 to more accurately time and make simultaneous the engagement of the shackle by the bolt and lever. going description that, in locking the assembly, the toe of the shackle pushing down on the hooked portion 28 of the bolt 10 causes the hook 28 to Aiinally passv the lower pointed surface ol: the stud 11 and at this instant the spring 26 Yforces the bolt forward to securely engage the stun. The mechanism cannet be locked until this operation is completed and the action of this hook 28 against the stud 11 withholds 'the entire mechanism from going` into its locked position until the shackle pushes the bolt down lar enough so that both the bolt and lever are timed to enter the notch in the toe ot the shackle simultaneously. Y f

This-application, in part, is a continuation of my application tiled May 10, 1928, and serially numbered 2276,? 81, now matured into Patent No. 1,704,184, dated March 5, 1929.-

Having thus l claim is- 1. A padlock comprising a casing, a shackle, and a pair olE locking units, means attached to one et said units tor locking both against relative rotation, said means being engageable by a key to unlock Vsaid means, said shackle having its heel pivoted andr its toe l'ree to be inserted one ot said locking units comprising a pivoted lever normally spring-actuated to enthe toe oi. said shackle, the other locking unit comprising a slotted bolt slidably described my invention what and )ivotallv mounted. on a sino'le stud and' .f O

adapted to engage both the toe and heel ot said shackle in locked relation, said lever and bolt having bearing surfaces adapted to be engaged in sequence by a key for disengaging said lever from the shackle toe and said bolt Vfrom said toe and said heel respectively.

2. A padlock comprising Va casing, a

plate has'an aperture 1l to lt will vbe understood from the'lorev in said casin g,

` shackle, and a pair'ot locking units, means.

shackle,and a pair of vlocking units, means attached to oneoil said units orvlocking both against relative rotation, said means being engageable by a key tounlock said means, said shackle having its heel pivoted and its toe free to be inserted in said casing, one of said lockingunits comprising a pivoted lever normally spring-actuated to Vengage the toe of said shackle,the other lockingA unit coni-l prising a bolt slidably and pivotallymount ed .on a single stud and adapted to engage.

thetoe and heel of Asaid shackle in locke relation, bearing surfaces on saidlever and bolt adapted to be engaged in sequence, re,

spectively, by a key for actuating in turn said lever about its pivot and out of engagement With'said toe, and said bolt substantially laterally out of engagement with said toe and then pivotally out of engagement with the heel.

3. A padlock .comprising a casing,- a

attached to one of said units for locking both Y against relative rotation,said means being engageable by a keytounlock said means,

said shackle having its heel pivotedand its toe free to be inserted in said casing, one yot said locking units comprising` a lever pivotedon a studand rnormally springvactuatedA the bolt from the toe and heel and from the studon Which said leveris pivoted.

4. A l shackle, anda pair of locking units, means attached to one ofsaid units for locking both against relativerotatioin-said means being engageable by a keyto unlock said means, said shackle having its heel pivoted and its toe free to be inserted in said casing, one of said locking units comprising a leverpivoted on a stud and normally springactuated to engage the toe of said shackle, lthe other locking unit comprising a bolt slidably and pivotally mounted` on ajsingle stud and1 adapted to engage the toel and heel of said shackle in lockingrelation, said bolt having a hook member adapted to ,engage they stud on 'which said lever is pivoted, a stationary change plate interposed between the main body portionsl of said leverf and bolt, said lever and bolt being adapted to be actuated*` respectively and in sequence by the. rotation of a keyto release the lever'from the toeand the bolt from the toe andheel and from the padlock comprising a casing, ak

stud on which said lever is pivoted, a spring bearingagainstsaid casing and said heel, by

means otvvhich the toe is under pressure to be positivelyA ejected l.upon the. release of said locking elementsfrom said shackle.'`

.5. lA padlockl vcomprising a casing, ya

shackle, anda pair of locking units, means Vattached to oneof said. units for lockingbotli against relativerotation, said means beingv engageable by a keyto unlock said means,

its toe tree to be inserted vin said casing, one of said locking units comprising a p ivgagethe toe 'of said shackle, the `,other locking unit comprising'a slotted bolt `slidably and pivotallymounted onA a single stud and adapted vto-en'gage both the toe and heel of said 'shackle in locked relation, said lever and bolt having bearing surfaces adaptedy to be engaged in sequence by 'a key for disengaging said lever from the shackle. toe

and said bolt. from said toe andsaid heel, l

respectively, said bolt -having ay pair of spaced notches, a lug carried by' said lever a-nd'adapted to engage one of said notches kWhen the` assembly islocked, and the other notch When unlocked `for the purposevof preventing relative movement of said lever and bolt in eitherinstance until said lever is actuated either bykeyor shackle'.

6. A 'padlock comprising a casing, ar shackle, and a. pair of locking units, means.

said shackle having itsvh'eel pivoted andy oted lever normally spring-actuated to en# attachedtoione-of said'un-its for' locking being engageable by akeyto unlock said means, said shackle'having its heel pivoted and its toe free, to be inserted in said casing, one of said locking units comprising a piv-` oted lever vnormally spring-actuated toi enz-1 gage the toe-of said shackle, the other lock-v ing unit'comprisinga bolt slidably and pivotally mounted on aV single stud and adapted to engage thev toe and heel'of said shackle tinV locked relation, bearing surfaces on said levery and bolt adaptedl to be engaged in sequence,respectively, by `a key for actuating `in turn said levergabout its pivot and ont of engagement with said toe, andv said 4` bolt `substantially laterally lout of engagenientwith said toe-and then engagigement with the heel.

shackle, and a pair of locking units,means attached to one of said unitsfor locking both againsty relative rotation, .said means pivotally out of 7.l A 4padlock@v comprising.-afifcasing, a'

being'engageable by afkey to unlock said means, said shackle having itsjheel pivoted 'and its toe freeto be inserted in said cas-f ing, one of said. lockingy units .comprising a lever pivoted on. a 'stud vand normally` spring Vactuated to engage thetoe of said shackle, the other locking. unit Vcomprising a` bolt slidably andpivotally mounted on both against relative rotation,isaid means *100' va single'studand adapted tovr engage the toe 130 and heel ot said shackle in locking relation, said bolt having a hook member adapted to engage the stud on which saidlever is pivoted, a. stationary change plate intenposedvbetiveen the main bodyV portions of said lever and bolt, said leverand bolt being adapted to be actuated respectively and in sequence by the rotation of a key to release the lever from the toe and the bolt from the toe'and heel and from the stud on which said lever is pivoted, said bolt having a pair of spaced notches, a lug carried by said lever and adapted to engage one oli' said notches When thev assembly is locked" and the other notch when unlocked for the purpose of preventing relative movement of said lever and `bolt in Leither instance until said lever is actuated either by key or shackle. 4' f f 8. Ac padlock comprising a casing, a shackle, and a pair of locking units, means attached to one et' said units for locking both against relative rotation, said means being` engageable by a key to unlock said means, said shackley having its heel pivoted and its toe free to'be inserted 'in saiclrasing, one ot' said locking units comprising a lever pivoted on a stud and normally spring actu# ated to engage the toe of said shackle, the other locking unit comprising` a bolt slidably and pivotally mounted on a single stud and adapted to engage the toe and heel oit said shackle in locking relation, said bolt having a hook member adapted to lengage the stud onivvhich said lever ispivoted, a stationary change plate interposed between vthe main body portions of said lever and bolt, said lever and bolt being adapted to be actuated, respectively, and in sequence by the rotation of a key to release the lever from the toe and the bolt from the toe and heel and from the stud on which said lever is pivoted, al spring bearing against said easing and said heel, by means of which the toe is under pressure to be positively ejected upon the release of said locking elements from said shackle, said bolt having a pair of spaced notches, a lug carried by said lever and adapted to engage one ot said notches when the assembly is locked, and the other notch when unlocked ttor the purpose oit preventing relative movement of said. lever and bolt in 'either instance until said lever is actuated either by' key or shackle.'

9. A padlock comprising a casing, a pivoed shackle, and a pair oil locking elements,

means attached to one oi" said units for locking both against relative rotation, said means being engageable by a keyto unlock said means, one of lsaid elements being adapted toengage the heel and both of said' elements beingadapted to engage the toe of said shackle, said elements being adapted to engage; the toe of said shackle, said elements being adapted to be operated separately and in sequence by a single key to release irst one element from the toe and the other from said toe and heel, respectively.

l0. lA padlock comprising a casing, a pivoted shackle, and a pair ot locking elements superimposed one upon thev other with a stationary change plate therebetween, means attached to one ot saidl units for locking both against relative rotation, said means being engageable by a rkey -to unlock said means, means carriedv by one of said locking elements for enacting' with the other to prevent relative lateral movement of said elements 'When they are in locked and unlocked position.

ll. A padlock comprising` a casing, a pivoted shackle, and a pair of looking elements superimposed one upon the other With a stationary change plate therebetween, means attached to one of said units for locking both against relative rotation, said means being engageable by a key to unlock said means, means carried by one of said locking elements for coaeting with the other to prevent relative lateral movement of said elements When they are in locked and unlocked position, said means being releasable from locked engagement only uponthe actuation ot the element carrying same.'

12A padlock comprising a casing, a"

pivoted shackle, and a pair of locking elements superimposed one upon the other With a stationary change plate therebetween, means attached to one o'l" said units for locking both against relative rotation, said means being engageable by a'key to unlock said. means, means carried by one of said lockingelements for eoacting with the other to prevent relative lateralmovcinent oi' said elements When they arein locked and un? locked position, both et said elements being adapted to engage the toe and one ot said elements being adapted to engage the heel ot said shackle, said elementsbeing operable separately and in sequence by a single key to release first one element from the toe and the other element trein respectively.

13. A padlock comprising a casing, a piv-4 oted shackle, Aand a pair et looking elements superimposed one upon 'the other with a stationary change plate therebetween', means attached to one of said-units yLtorloeking both against relative rotation, said means being engageable by a key to unlock said means, means vcarried by one of said locking elements tor eoacting with the' other to prevent relative lateral movement of said ele-` ments When they are in locked and unlocked position, said means being releasable from` locked engagement only upon the actuation of the element carrying same, both of said elements being adapted to engage the toe,

and one of said elements being'adapted to said toe and heel,VV

engage the heel of said shackle, saidele-` ments being operable separatelyandin selquence by a singlekey to release first'one positive spring release for said shackle when in unlocked position'. I Y

lll. Al padlock comprising a` casing, a pivoted shackle, and lafpairv oi locking elements, means attached to one of said units forlocking both against relat-ive rotation, said means being'enga-geab-le by a key to unlock said means, bot-h oit said elements being adapted to engage the toe and one of said l y vits one end the heel of said shackle and at elements being adapted to engage at its one end the heel of said shackle and at its other end a stationary member of said casing` all in locked relation, said elements being oper# able separately and in sequence by a single key to release .first oneelement from the toe andthen the other element from the toe, from the stationary member of said casing,

and from the heel of said shackle,respeceV tively.

l5. A padlock comprising a casing, a pivoted shackle, and a pair of locking elements superimposed one upon .the other with a `stationary change plate therebetween, means attached to one of said units for locking bothagainst relative rotation,said means Vbeing engageable by a. key to uiilockfsaid means, bothY of said elements being adapted to engage the toe and one of said elements being adapted to engage, at its one end, the heely oil said sha-ckle and at its other end a stationary member of said casing all in locked relation, said elements being operable sepa-V 'ratelyv and in sequence by a single key to release lirst one elementirom the toe and f then the other element from the toe, said stationary member of thercasing, and the heel of said shackle, respectively, means car-' ried by one ot' said locking elements for coacting with the other to prevent relative lateral movement of said elements when they are in locked and unlocked position.

16. A padlock comprising a casing, a pivoted shackle, and a pair ot locking elements superimposed one upon the other with a stationary change plate therebetween, means attached to one of saidfunits for locking both against relative rotation, said means being engageable by a key to unlock said means, both of said elements being adapted to engage the toe and one of said elements being adapted to' engage, at its one end, the heel of 'said shackle and rat its other end a stationary member of said casing all-in locked relation, said ,elements being operable separately and in sequence by a single vkey to release first onev element from'tlie toeand then the other element from the toe, said stationary. member of the casing, and thev heel of said shackle, respectively, means carried by one of said locking elements for coacting with the other to pre-vent relative lateral movement ofsaid'elements when they are in lockedy and unlocked' position, said means being releasableV from` lockedl engagement only upon the actuation of the element carrying same.

ments, means attached -to' one of said units 'for locking both against relative rotation,

said means being engageable' by a key to unlock saidmeans, both ot' said elements being-adapted to engage Athe toe and one of said'elements being adapted to engage, at

its other end'a stud all in locked relation, said stud being angular in its contour and oit such dimensions and so arrangedv with respect to said bolt, that the shackle upon ing the two elements against relative rotation, said spring lever being provided with an upturned flangev overlapping the key bearing surface of saidv upper element, and engageable. by a key to be raised thereby and consequently withdraw said locking stud pinfrom said lower element previous to any actuation of the two locking elements by said key.

V4i9. A padlock eomprisinga casing, a piv.

oted shackle, and a pair of superimposed locking elements, means mounted on the upper element for engaging` the lower element tolockthe two against relative rotation, said means being engageable by a key to unlock 17. AV .padlock comprising casing, a 'pivoted shackle and a pair of locking `elesaid locking means' prior to the unlocking action of said key lonsaid locking elements. 20. A padlock comprising la casing, a

shackle, and apair oi' lockingv units, means attached to one oi said units for locking both against relative rotation, said means being engageable by a key to unlock said means, said shackle having its heel pivoted and its toe free to be inserted in said casing,

Yoneof said locking units comprising a pivoted lever normally spring-actuated to engage the toev of said shackle, the other locking unit vcomprising a slotted bolt slidably and pivotally mounted o n a single stud and adapted to engage both the toe and heel of Vsaid vshackle in lockedrelation, said lever and bolt having bearing surfaces adapted to be engaged in sequence by a key for disengagingsaid lever from the shackle toe and Icn Asaid stud pin extending` through an aperture in said bolt in slideble relation and into a recess 1n stud Alever locking sind bolt and lever against relative rotation, seid Spring lever being provided with an upturned flange 'overlupplng the bearing surface of said bolt and engageable bye key to be raised thereby and Consequently Withdraw Seid locking Stud pin from said locking" lever previous to any actuation vofthe loeking lever or belt by said key. v.

In testimony whereofp I a'HiX my signature.

SAMUEL n. YFRMM. 

